Mitsubishi Chemical Corp. (MCC; Tokyo) and Japan’s National Institute for Materials Science (NIMS; Ibaraki) said on Wednesday that the Patent Court of Korea has rejected an appeal by Intematix (Fremont, CA) contesting their patent for red phosphor, a material used extensively in LEDs. The court’s decision, effective 3 June, rules in favor of the patent’s validity. Intematix brought an action to invalidate the patent in the Intellectual Property Tribunal of the Korean Intellectual Property Office in September 2012, but the tribunal...